18663080

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4129}}^1$

素因数の和:4253

約数の個数: 32

約数和(自身を含む): 42373800

約数和(自身を除く): 23710720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4129, 4520, 8258, 16516, 20645, 33032, 41290, 82580, 165160, 466577, 933154, 1866308, 2332885, 3732616, 4665770, 9331540, 18663080]

約数ペア:

[(1, 18663080), (2, 9331540), (4, 4665770), (5, 3732616), (8, 2332885), (10, 1866308), (20, 933154), (40, 466577), (113, 165160), (226, 82580), (452, 41290), (565, 33032), (904, 20645), (1130, 16516), (2260, 8258), (4129, 4520)]